[Dolphin_Mac]

1990 Dolphin Superskiff with 2006 Yamaha 70 2 stroke. Currently have 13 1/4 17 pitch prop but only turn 4500 RPMs on plane. Will going to a 13 1/4 15 pitch SS prop help increase RPM's? Also what kind of gas consumption or travel distance should I expect to get with an 18 gallon tank?

 

[Dolphin_Mac]

Stilleto has a 13 1/4 13p prop. My current prop is 13" x17p. RPMs WOT is 4400 RPMs. Will the 13p prop improve my performance?